Remarkable photoluminescence enhancement of CsPbBr3 perovskite quantum dots assisted by metallic thin films
Remarkable photoluminescence enhancement of CsPbBr3 perovskite quantum dots assisted by metallic thin films
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金属薄膜辅助 CsPbBr3 钙钛矿量子点的显着光致发光增强
DOI：
10.1515/nanoph-2021-0064
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发表时间：
2020-06
期刊：
影响因子：
7.5
通讯作者：
Hao Jiaming
中科院分区：
文献类型：
--
作者：
Zhao Wenchao;Wen Zhengji;Xu Qianqian;Zhou Ziji;Li Shimin;Fang Shiyu;Chen Ting;Sun Liaoxin;Wang Xingjun;Liu Yufeng;Sun Yan;Tan Yan-Wen;Dai Ning;Hao Jiaming
摘要 全无机铯铅卤化物钙钛矿量子点作为一种有前景的光电材料，具有良好的发光性能，在照明、激光和光电探测等领域具有广阔的应用前景，近年来受到广泛关注。尽管基于此类介质的照明应用已取得显着进展，但性能仍有待提高。在这里，我们证明了通过使用金属薄膜可以大大增强具有高本征发光效率的钙钛矿量子点的光发射，这种技术通常被认为仅适用于改善具有低本征量子效率的材料的发射。钙钛矿量子点在裸介电基板上的发射观察到 11 倍的最大 PL 增强。我们探索了这种光发射的显着增强，其源于通过零级光学不对称类法布里-珀罗薄膜干涉增强量子点在激发波长处的入射光子吸收以及增加表面等离子体激元介导的发射波长处的辐射率和量子效率的联合效应。我们相信，我们的方法对于增强具有高内在量子效率的其他荧光介质的光发射也具有潜在价值。
Abstract All-inorganic cesium lead halide perovskite quantum dots have recently received much attention as promising optoelectronic materials with great luminescent properties and bright application prospect in lighting, lasing, and photodetection. Although notable progress has been achieved in lighting applications based on such media, the performance could still be improved. Here, we demonstrate that the light emission from the perovskite QDs that possess high intrinsic luminous efficiency can be greatly enhanced by using metallic thin films, a technique that was usually considered only useful for improving the emission of materials with low intrinsic quantum efficiency. Eleven-fold maximal PL enhancement is observed with respect to the emission of perovskite QDs on the bare dielectric substrate. We explore this remarkable enhancement of the light emission originating from the joint effects of enhancing the incident photonic absorption of QDs at the excitation wavelength by means of the zero-order optical asymmetric Fabry–Perot-like thin film interference and increasing the radiative rate and quantum efficiency at the emission wavelength mediated by surface plasmon polaritons. We believe that our approach is also potentially valuable for the enhancement of light emission of other fluorescent media with high intrinsic quantum efficiency.
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影响因子：
4
作者：
Cheng, Peihong;Li, Dongsheng;Yang, Deren
通讯作者：
Yang, Deren
超越卤化铅钙钛矿中缓慢的双分子重组，实现电致发光
影响因子：
16.6
作者：
Xing G;Wu B;Wu X;Li M;Du B;Wei Q;Guo J;Yeow EK;Sum TC;Huang W
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Huang W
影响因子：
10.8
作者：
Protesescu L;Yakunin S;Bodnarchuk MI;Krieg F;Caputo R;Hendon CH;Yang RX;Walsh A;Kovalenko MV
通讯作者：
Kovalenko MV
影响因子：
56.9
作者：
Andrew, P;Barnes, WL
通讯作者：
Barnes, WL
影响因子：
41.2
作者：
Okamoto, K;Niki, I;Scherer, A
通讯作者：
Scherer, A